(mysql.info) selecting-all

 
 3.3.4.1 Selecting All Data
 ..........................
 
 The simplest form of `SELECT' retrieves everything from a table:
 
      mysql> SELECT * FROM pet;
      +----------+--------+---------+------+------------+------------+
      | name     | owner  | species | sex  | birth      | death      |
      +----------+--------+---------+------+------------+------------+
      | Fluffy   | Harold | cat     | f    | 1993-02-04 | NULL       |
      | Claws    | Gwen   | cat     | m    | 1994-03-17 | NULL       |
      | Buffy    | Harold | dog     | f    | 1989-05-13 | NULL       |
      | Fang     | Benny  | dog     | m    | 1990-08-27 | NULL       |
      | Bowser   | Diane  | dog     | m    | 1979-08-31 | 1995-07-29 |
      | Chirpy   | Gwen   | bird    | f    | 1998-09-11 | NULL       |
      | Whistler | Gwen   | bird    | NULL | 1997-12-09 | NULL       |
      | Slim     | Benny  | snake   | m    | 1996-04-29 | NULL       |
      | Puffball | Diane  | hamster | f    | 1999-03-30 | NULL       |
      +----------+--------+---------+------+------------+------------+
 
 This form of `SELECT' is useful if you want to review your entire
 table, for example, after you've just loaded it with your initial
 dataset. For example, you may happen to think that the birth date for
 Bowser doesn't seem quite right. Consulting your original pedigree
 papers, you find that the correct birth year should be 1989, not 1979.
 
 There are least two ways to fix this:
 
    * Edit the file `pet.txt' to correct the error, then empty the table
      and reload it using `DELETE' and `LOAD DATA':
 
           mysql> DELETE FROM pet;
           mysql> LOAD DATA LOCAL INFILE 'pet.txt' INTO TABLE pet;
 
      However, if you do this, you must also re-enter the record for
      Puffball.
 
    * Fix only the erroneous record with an `UPDATE' statement:
 
           mysql> UPDATE pet SET birth = '1989-08-31' WHERE name = 'Bowser';
 
      The `UPDATE' changes only the record in question and does not
      require you to reload the table.
Info Catalog
(mysql.info) retrieving-data
(mysql.info) selecting-rows
automatically generated byinfo2html